Make usage tracking switchable!
I'm not quite sure if it's true, but in the README from Asterisk (http://downloads.digium.com/pub/telephony/codec_opus/asterisk-13.0/x86-64/README) states that the Opus codec always sends anonymous usage data to an Asterisk community server. In the times of the European data protection regulation this is an avoidable problem. Therefore, the usage tracking should at least be switchable off.
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